40012684 has 12 divisors (see below), whose sum is σ = 70232344. Its totient is φ = 19946304.

The previous prime is 40012681. The next prime is 40012697. The reversal of 40012684 is 48621004.

It is not an unprimeable number, because it can be changed into a prime (40012681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13494 + ... + 16189.

Almost surely, 2^40012684 is an apocalyptic number.

It is an amenable number.

40012684 is a deficient number, since it is larger than the sum of its proper divisors (30219660).

40012684 is a wasteful number, since it uses less digits than its factorization.

40012684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30024 (or 30022 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 40012684 is about 6325.5579991017. The cubic root of 40012684 is about 342.0313344066.

Adding to 40012684 its reverse (48621004), we get a palindrome (88633688).

The spelling of 40012684 in words is "forty million, twelve thousand, six hundred eighty-four".